Proportionate application of chemicals to fluids.



G. F. HODKINSON. PROPORTIONATE APPLICATION 0F CHEMICALS T0 FLUIDS.

APPLICATION FILED MAYQ, I9Iz.

Lly. Y Patent-ea 0015.2?1911` Fia 1 WIT ES ES A TTORNE Y G. F. HODKINSON. PROPORTIONATE APPLICATION 0F CHEMICALS T0 FLUIDS. APPLICATION FILED MAY 9, l9l2.

,23,'737 Patented oet. 23,1917.

2 SHEETS-SHEET 2.

WIG. Z

A TTORNE Y lsE.@fiarne. iena-saar anion;

T0 -AMERICAN' WATER SOFTENER A' CORORATION OF'NEW JERSEY;

f GEORGE F; I-IODKCNSOVN',l OF'PHILADELPHIA, PENNSYLVANIAVASSIGNOR OF ON-E--HALF PROPORTIONAT APPtIoATio'N on CHEMICALS To' FLUIDs.

To all ALi/wm t may] concern? Y Beit'known' that I, GEORGE'F; -H0DKIN son, a citizen ofthe United States, residlng` at School Lane andrPulaskif avenue, 1n the county ofPhiladelphia`V and VState of Pennsylvania, have invent-'ed` af- Philadelphia,

certain new and useful Proportionate .Application oit Chemicalsto l1luid"s,fof Which the tolloiving 1s a specicati'on;

The purpose' of, my invention fis -ito apply proportionate quantities 4ol'al `chemical yto a Huid being treatedV and having` avariant flow bymeans-vvhich determ'ines the'` rate of flow/by the differenceV between the-'heiglitsof bodies of the fluid treated.`

fr further purpose ofmy'inventionis-to# translate effective head oijluid treatedinto effective head oi mechanism which adjusts to the height of fluid treated'luponboth sides of asubmerged orifice.

Further purposes of my invention.v yWill appear from the specification' 'and-theclaims appended thereto.

i prefer to illustrate myinvention 'by a form thereof Which vI have determined' 'to be practical, efficient and relatively inexpensive f Well illustrates l and 'which at the saine time the principles involved.

Figure l is a vertical longitudinal section ol a :preferredforni -ofmy invention.

Fig. 2 is a top plany vien7 ofthe structure shown in Figli With thereof 4anda floor' removed.

Fig. 3 is'an enlarged elevation, partly broken, showing a' dilieerential-r` connection used in the forinillustrated iii-Fig". 1;

Fig'. i isan enlarged sidel elevationv of 'the feedingl Inihe treatment of Waterv supply, and other liquids to correct for undesirable elements or supply desired' cor'1sti`tue`nts,'asv Well asin the mixing of'liquidsfor"agre'at-y variety of purposes, uniformityof-i-'eed of the corrective material in proportion tothe l need vis highly necessary'andA diflioult'of attaininent. F or this reason', in mal-iy-'insta-llations, attempt is made to 'regulate'fthefeedr by hand in proportion to the fluid-lltvasf- I have supplied" a method/fand apparatuswhich -ie'eds a ctn'r'e'f'ztive lor addi tional fluid automatically 'y inf'proportifonito* indicated.

Specification of Letters Patent.`

treating? liuidfV through mechanismforl the' corrective fluid.i sewage" the Inee'd, varying'the lovvn ofthe second= fluid by` operation of -the same lavv as controls' the flow of the' fluid treatedonwithV which thesecondiiuidis mixed.'

While the fluid' treated' may be stored in'- any character of reservoir, dani, or'f tank; open orclosed andinay be' deliveredto `any other" suitablef reservoir,"y dain or= tank,- th'rougha'- preferably submerged control-l lable opening-,1 so as 'to cause the lowfthrougfh the opening' to Vvary according-totheWell recognized laws of' flow' of luids due ftofthev variantghead of fluid -`in the' delivering con-- tainer, over thatffin` the receivingl container,

have Preferred to` vlimit Vther content'v off both of these" chambers for theV purpose of' better' regulating and-- distributing? the f application of' thetreatingluidto theiuidI treated andY because I -can "then-better? proi tect and iniX'- the fluidA during;- its` `treatment.y Evidently the only requirements y'a'sfto what I shallhere'after "call the treated fluid are that there shall beflovv from* onelbody thereof?.

CoM-rent, or PIILA-DELPHIA, PENNSYLVANIA.,

Y Patented Oct.V 23,A 191,7; Application 'inea may 9; 1912.`A` serial Nasse-178.1

to anotheri'with? means of converting` the-eil y :fluids or treat the treatedA iuidiinleitheijv of them at WilhLiriproportion to the flow front one to fthe' other as de'te'rminedthe *dif-i' ference` inf heights between the 1 discharge'an'df receiving compartments-on the height-of Water flowing over a'fvveir.

The tivo tanks f or coinloartinentsf Which' I prefer to' use 'to secure greater'coni'fenience and ei'ciency' are shown: as fh'aving Walls v4" and b'ott'oinf and a top 7, which provides a Hoon for a regu'latine`` table above "the tanks.` I show inletpipe'f'S; and outletpipei l 9, Which latter i s,--abovefanyfgsuitablel just-able opening' -10`ibetvveen`the1 two tanks, in ord'erl that' this opening ll0in 'ayf"always be' submerged an d' 'the 'flow through it inayfconl seouentlyv-'fllowf the la'ivf'ofthe llv'vf of? li'q uidsfthrongl submerged openings@ i v What I have called tanks may, in fact, contain large or small. bodies of the treated fluid in accordance with the needs of the n particular installation, whether the operalevelsupon both sides of the orifice to determine and translate into proper treating-fluid feed-regulating movement the effective head obtained.

l prefer to use floats, among the various devices available to determine the heads or heights of fluid in the two bodies of treated lluid, preferring to take the measurements from the heights rather than from, for example, the variant pressures resulting from these heights, because differences in heights can be measured more delicately and more directly applied to the control of the treating fluidrthan differences in pressure.

The location of the head-determining apparatus is a matter of convenience largely, provided they can be connected with the bodies whose heads are to be compared. l have preferred to place both of the floats 11, 12 upon the same side of the division wall and to operate one of them, by connections extending through the wall from the body of fluid farthest distant from it. ln order to make this operation effective, l

have placed this float 12 within a tube, shellk or pipe 13 which has no connectionl with the discharging body of fluid 1l shown within compartment 2 but which is connected with compartment 3 as by pipe 17 so that the height of the fluid within pipe 13 always corresponds to that of the receiving body 15 of fluid. l have preferred to place the float 11 within a tube, shell or pipe also to pro- Atect it from undue influence by the currents of fluid within body 1li with which its interior is connected, however, by openings 16.

rlhe shell 13 is shown as connected with the body of fluid 15 for convenience by a pipe17 whose end 18 is screened to protect against foreign matter as well as undue variation by reason of fluctuation of the fluid in the body 15. rlhe end 18 is preferably spaced laterally from the submerged aperture 10, so as not to be affected by the fluid passing therethrough. Y

l. have preferred to provide for gradua" tion or adjustment of the size of the opening 10, both in order that a standard. apparatus may be put out capable of treating widely variant quantities, of flow, and so that adjustment may be made as desired from time tov time to accommodate or agree with largeror smaller average daily or weekly flows if desired.

l effect this adfustment, in the form illus# Vtrated by means of a sli lable plate or gate 19, which l place upon'the delivery side of the aperture in order that theflow or tendency to flow may press it against the wall vithin which the aperture is made. Having a larger surface exposed upon the delivery side than is exposed where it passes the aperture, the tendency would be to press this gate against the divisionwall between the two bodies of treated fluid, even when the heads on the Atwo sides of the division wall are approximately equal. rlhis would still be true even if that on the receiving side slightly exceeded that upon the delivery side.

l prefer to guide the gate 19, as at 20, and to operate it, by means of a rod 21, from'any suitable standard 22, as by wheel .23 and appropriate intermediate mechanism. The aosition of the gatemay be conveniently shown by arrow 2li, movable along scale 25.

llyvthis gate construction the size of the aperture 10 is adjusted to accommodate an estimated or known mean rate of flow and the height of vdivision wall is made to correspond with the limit of possible backing up of flow during the times of maximum rate thereof, or, safely, with the height of the source from which. the fluid treated is supplied.

lroper treatment by my mechanism and method does not reduire knowledge of the exact rate of flow. cal, for example, supplied can be adjusted until the fluid treated passes the required test, setting the device without knowledge of either the rate or quantity of flow of treated fluid. K

ln the illustration which l have given, where the one fluid is being treated7 by the other, rather than mixed with another, the quantity of flow of 'the second fluid is necessarily relatively small. l have therefore illustrated connections and container for the treating fluid as well.v as regulation therefor which are arranged upon a relatively small scale. y lt will be well understoodby those familiar withk the art that any desired quantity of treating fluid or fluid to be mixed with another, may be handled in accordance with the principles of my invention disclosed herein, without involving further invention.

`lnthe illustration ,l supply the treating fluid within eitherbody of treated fluid at will by means of pipes 26 and 27, which are connected to a common supply pipe, 28, and are controlled by means of valves 29, and 30, from hand operating means 31 and 32. l

have shown the connection as oordelen i The quantity of chemiice lOl

chains 38 and 34:, and may 0011116.01; the valves in any suitable manner, if desired, 'to auto` inatically close one ofthe valves las the other is opened. The connection Which I have illustrated for this purpose is through a cord or chain 35 controlling their operating devices. I prefer to terminate the pipes 26, and S27, as at 38 and 39, in proximity to and preferably nearly in line with the aperture l0 in order that the treated Ifluid may more thoroughly mix ivitli the treating iiuid because of the better circulation of treated fluid close to the aperture.

rllie fluid mixed and which is to be fed f, into the socalled treated iiuid is shown,

for convenience, as

.passing from the tanks 40 and 4l to solution tanks eli and et? by means of pipes 464-7 controlled by valves,`

as 4S or 49, if desiredl By theduplicate arrangement of mixing and solution tanks which I have shown I am enabled to draw freely from one set vvhilefluid is loeingpre-l pared or is stored in the other.

I pass the fluid .from tank sie or 45, into what I `ivill term a feed, tank 50, through. valve 51, Whose fluid level is vH1lntained preferably by fioat actuation in order that I need not adjust or vary the movementof feeding mechanism to adjust for variation in fluid level. j

My invention concerns particularly the translation of variation in the effective head of the one fluid, here determined by relative movement of the floats 11 and l2, into proportionate variation in the Vrate of feed of another fluid, here the fluid Within the tank 50, fed 'doivn through pipe 28. Y In the construction shoivn I accomplish this proportionate alteration of the depth of submerg ^ice of the discharge aperture beneath the surface of fluid in tank 50.

In the illustaticn I `accomplish this pro-l portionate variation byapplying the saine law to the feeding of the treating fluid as causes the variation in flow of the treated fluid.

I connect the two floats l1 and l2, by means of chains and 53, counter-Weighted at 52, 53, ivith pulleys 5st and 55, comprising opposite parts' of any suitable differential mechanism. The formY illustrated is best seen in Fig. 3. f The pulleys are secured to sleeves 56 and 57, upon Which are mounted gears 58 and 59 engaging upon opposite sides with tivo gears 60 and 61.y i y The gears GO and 6l are retained upon stub shafts 62, 62 by means of collars'GB. The shafts G2, (il as by any suitable bearing block 65, forining a familiar form of 'planetary gearing wherein movement of the gears 5.18and 59, in opposite directions angularly) kat the same rate of speed, does not Vaffect the position of the stub shafts 62, 62', since the aan v0 we el merely refe-te eras there 62 are connected With shaft- This is .the condition when the floatsI 1l andv 12, are moving.upivardlyor vdovvnvvardly at the samerates of speed,v i l f Vhen there is any difference in the extent of rise or fall of the floats 11 or l2, or in their direction of movement,.corre to achange in relative fluid levels inthe tWo bodies la and l5, the stub shafts 62and 62 Will be turned about the shaft 64 iii onedil rectionor the other, according 'to` the approach or recession of the two levels, to or from each-other and will carry thel shaft 6a ivith them .resulting in rotation of the pulley. l A

lVithin the tank 50 I anchor a device 67 containing any suitable joint, permitting relative movement of the character lpreferred by the designer Without interfering With the flow of fluid 4through the joint. My preferred construction is ybest shown in Fig. el, Where theupper end of the pipe 2 8 is shown asthreaded at 68, for engagement with a nut 69 upon the lower sideof the bottoni 70 of the tank and with a boss for Hange 71, upon the upper side of this tank bottom.4 The boss 7l may represent any suitable fitting ivithin which the pipe 2 8, is screwed at its upper end, and preferably carries a preferably right angular extension 72' Whose interior is influid connection withA theinteriorof the' pipe 2.8. VIVithin this extension V72 I pivotJ the preferably right an# gular 'mating extension of a hollovv fitting "T8 which is connected ivith. a pipe 74 so .that the interior of the pipe 74C and' any suitablel aperture or opening V75 therein, is' at times in fluid connection with the pipe 28, While capable of a swinging movement about the extension 72.

Preferably at the end of the pipe since the vaperture preferred by me'fis in the side thereof, I form any. suitable 1attach`- inent'TG for a cord or chain 77 vwhich passes about the pulley 6,6, so that rotation of the shaft 6i, because of variation in levels of the bodieslei and'l, results in i-aising'oil loivering the aperture and correspondingly varyingl thel depth of snbmergence'of the aperture beneath the level ofy 'fluid "in tank 50.

It will be evident that other means of varying the rate of floivof the treating fluid might be substituted, While obtaining a part of the advantage of my inyention though I prefer to vary thel depth of submergencc of a submerged aperture-'rather than the 'height of the 'fluid orof an opening over which the iliuid'flovf's, and that much ofthe advantage of vmy invention vwould be secured by proportionate variation in fluid feed, however secured,

In order that lthe volume offlovv `off the #ein meer@ letteraria Spending by adjusting the length of a slot therein, and do this conveniently, in the construction shown, by a sleeve 78, threaded upon the member 7a as at 79. rlhe lock-nut 80 may be used if desired.

ln operation :-'i`he aperture 10 is opened to the desired extent for the expected mean flow by operation of the gate 20, and the size of the aperture 75 is adjusted to correspond with the flow required for the strength of the treating solution available or desired. Ihe size of wheel 66 is selected to provide a rate of variation in submergence corresponding to the variation in level difference between bodies 14 and 15, as transmitted through floats 11 and 12, and the differential intermediate connections. The tank is supplied with treating fluid, and the member 7 4: is set with the aperture 75 just at the level of the fluid in tank 50, when the levels of bodies 14 and 15, are equal, so that flow through the aperture will begin with any relative reduction in the height of the fluid at 15 with respect vto that in 1s. Valve 29 or 8O is then opened.

Any change in level of the bodies 14 and 15 results in difference in rate of speed of the gears 58 and 59 with corresponding rotation of shaft Gli and movement of the member 7 4. The operation is automatic and the difference in effective head of fluid upon the effective aperture at 10 is translated into difference of .effective head above the aperture 7 si, in the treating solution.

lt will be evident that it is not necessary to have anything like the extent of difference in the actual effective heads within the treating7 fluid which exists as actual effective head within the treated fluid, though the proportion between the heads effective in causing the flow of the two fluids should be maintained.

lt will be evident that even if the structure selected for illustration only be used it may be greatly varied in details and that widely dierent structures may be used to secure the advantages of my invention without departing from the spirit and scope thereof.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent is 1. ln an apparatus for treating liquids, a division wall dividing two bodies of the same liquid in a substantially static condition, said wall having a submerged orifice, two floats, one controlled by theheight of the liquid in each of the bodies, connections from the floats, a shaft, differential mechanism connected to the shaft and to the floats turning the shaft with relative movement of the floatsand maintaining the shaft in stationary position when the floats are stationary or moving at the same rate and in the same direction, means for feeding the treating medium and connections from the shaft to said means, automatically varying the feed of the treating medium in proportion to variation in effective head between the two bodies of the liquids.

2. In a device for treating liquids, a division wall between two bodies of the same liquid in a substantially static condition, said wall having a submerged orice, floats, one in each body, varying in height with the height of liquid in the two bodies thereof, a tank for the treating liquid, feed mechanism for the feeding liquid having an aperture and means connected with the floats for varying the head of treating fluid effective upon the aperture, with relative movement between the floats.

3. ln a low head liquid-treating apparatus, a division wall dividing bodies of the same liquid having theirsurfaces in substantially static condition, said wall having a submerged orifice, a cut-off' for varying the extent of opening of said orifice, floats in the two bodies of liquid and automatic fluid treating mechanism controlled by the relative heights of the floats due to variation in relative heights ofliquid in said twoY bodies.

4. ln a device for treating liquids, a division walldividing two bodies of the same liquid in a substantially. static condition,y said wall having a submerged orifice, a float resting in each of said bodies, differential mechanism transmitting relative vertical movement of they two floats into motion and feeding mechanism for a treating liquid proportioning the feed according to the extent of said motion.

5. ln a device for treating liquids, a division wall dividing relatively large bodies of liquids being treated and having a sub-r merged aperture, means for varying the size of the aperture in proportion to the normal rate of flow of the liquid into one of the bodies, floats resting in the two Vbodies respectively, a container for treating liquid, connections from the container to one of the bodies of liquid to permit flow therebetweem said connections having an inlet from the container capable of variation in depth below the surface thereof and differential means between the floats and the inlet to vary the depth of said inlet below the surface in the container in proportion to the difference in extent ofvertical movement of the two floats.

GEORGE F. l'lODKlNSQN.

Witnesses:

HELEN l. KAUFFMAN, WM. STEELL JACKsoN.

nonies this patent :may he obtained for five cents each, by addressing the Commissioner or retains..

Ystrax, E, no 

